Sustainable Communities

SUSTAINABLE COMMUNITIES
SITE ANALYSIS: NORTH DUNEDIN
Desi 335 Summer School 2009

Dave Strydom, Luke Pirie, Guinevere Alai, Rob Machin, Oliver Cameron, Matthew Taine

Luke Pirie
Dave Strydom
Rob Machin
Matt Taine
Guinevere Alai
Oli Cameron

CONTENTS: SITE
02
COMMUNITY
14
HEALTH
26
MATERIALS
38
SYSTEM
50
OUTCOME
64

NORTH DUNEDIN

02

SITE:
HISTORY OF THE LAND 03
BUILDING VALUES IN CONTEXT 05
CURRENT USAGE 07
ZONING AND REGULATIONS 09
RESIDENTIAL ZONE 3 REGULATIONS 10
CONNECTIONS AND RELATIONSHIPS 11

NORTH DUNEDIN

HISTORY OF THE LAND
03

The Site
According to the current owners, Allen and Maria this area also such as the Gregg Mansion, which was for food production and further living space, although
McCaw, the house on the site was built around the time split into several pieces and distributed down the length the current owners explained that the lack of building
of the first world war. The owner was a mediterranean of Queen St opposite the site. The reserve land around up the hill is due to its being a “logistical nightmare”
ship merchant who settled in Dunedin with his family. the site is part of the town belt, but the land upwards for construction. The living area of the house currently
The arches and the flat roof are typical of the classical of the inhabited part of the property to the boundary has five bedrooms, with a small kitchen/laundry and a
modern style in which it is built, and the overall facade at the top of the hill is part of the site. The area of this small lounge. There is undoubtedly room for expansion
of the house is quite grandiose in regards to its context. section of the property is about two and a half times to house more people than this in a more comfortable
Several historic Dunedin buildings are situated around the area of the house The potential here is massive and sustainable way.

NORTH DUNEDIN

10 04

The Area
1 Duke Street sits on the side of the valley that was sun in all seasons. This is very important in terms of the created by flooding eroding away the volcanic rock
carved out of the land by the Water of Leith over the amount of solar radiation that can be collected and until a steep valley was created, and so the terrain at
last million years or so. The orientation of the site is utilised for heating and food production, among other Duke Street level is mostly gravel and silt. At the foot
North-facing, unlike 80% of houses in North Dunedin, things. A University of Otago Energy Studies research of the hill is the Leith flood plain. This is important in
and so takes full advantage of the sun’s rays. The project has found that Dunedin is the least effectively that it is a large flat fertile area that poses no physical
property extends up into the bush on the side of the sun oriented city in New Zealand, so finding a site interference in the direction of the sun’s rays even
hill, so it is ideal in terms of overall sun-coordination with this amount of sun potential is very important throughout winter which is when the sun passes
as the entire site is elevated and oriented towards the in Dunedin. The hill that the site is located on was lower in the sky in this specific direction.

NORTH DUNEDIN

BUILDING VALUES IN CONTEXT
05

From left to right: The chosen site (1 Duke Street), The Gregg Mansion, 4A Duke Street, Area Location Map, Aerial photograph of the site.

Site
The proposed site, 1 Duke Street, contains earthworks or rebuilding which uses vast amounts of
one existing dwelling which was built by the energy and resources. Using existing resources on site
Mediterranean ship merchant (insert name here) is one of the main goals of the project.
in (insert date here) in Italian Renaissance style The building only occupies 167 square metres of
that demands attention and carries a real sense of the site leaving a very large space which is currently
historic value. There is a sense of history evident in covered in scrub leaving massive potential for more
most Dunedin architecture, with most new buildings productive usage. Other neighboring sites typically
trying to encapsulate or imitate this sense of historic have smaller sections and smaller buildings. However
style. A clear example of this can be found opposite this site is far from isolated in its characteristics as
the site at 4a Duke Street. There is great value of Dunedin has many urban sites which do not utilise
having an existing building which complements it’s the large sections they occupy. Due to this trend in
surroundings so well. Utilizing the existing structure unused section space, our solution may be able to
will allow us to minimize the need for extensive adapted to different sites around North Dunedin.

NORTH DUNEDIN

06

The Environment

The site neighbors a part of the town belt known as as they remain close to the necessities required for a This smaller community based approach to living will be a
Prospect Bank, which contains Bullock track. It is also only convenience based lifestyle without feeling like they are key characteristic of a solution to the problem of creating
30 metres from the Woodhaugh Gardens which contains in a condensed and heavily populated area. Even with this more sustainable housing.
The site neighbors a part of the town belt known as sense of being out of the city, the site is only 5 minutes
Prospect Bank, which contains Bullock track. It is also only walk from the bus stop, doctor, supermarket, university, Given the site of 1 Duke Street is located in such a desirable
30 metres from the Woodhaugh Gardens which contains a 24 hour convenience store, pub and bottle store to name location containing such a durable building which is in keeping
playground, swimming pool and duck pond. The Leith River but a few. Having the necessities of life in walking distance with the architectural style of Dunedin, with amenities and
is also in close proximity to our site, which may be utilised from the site is essential to reduce the usage of cars, resources in such close proximity, and the obvious potential
as an energy resource. This gives our site ample access to increase the quality of life that the occupants feel while for a vast improvement with the unused land, it has been
the ‘outdoors’ with close proximity to nature. inhabiting the site and for building a more sustainable chosen to create a model for sustainable housing within
People living in urban areas often search for such sites future for the site. North Dunedin.

NORTH DUNEDIN

CURRENT USAGE
07

Site Specific
The site at 1 Duke Street is unique to the North
Dunedin area in many aspects. It is situated at
the base of a north facing hill in the Leith Valley
and so receives the benefit of a north arcing sun,
with the hillside also shielding the building from

ANNUAL RAINFALL
cold Southerly winds coming from the sea. The
buildings front face is flush up against the footpath,
but the boundary of the property extends 40m up
the hill. This hill as a barrier effectively divides the
property into 2 different microclimates. According to
growOTAGO data compiled by the Otago Regional 1 Duke Street
Council, the different elevations of the site result in
drastically different annual rainfall levels and wind
speeds. This duality is a valuable and versatile asset to

AVERAGE ANNUAL WIND SPEED
the site, providing a sheltered lower area for living as
well as an upper area for other activities. The current
usage of the extensive backyard is nil. From the top
of the concrete staircase behind the building to the
back fence, trees, brush and vines grow unchecked.
The large trees dotted throughout the section help to
prevent topsoil erosion as well as provide shade and
shelter.

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08

1 Duke Street is currently undergoing minor house very comfortably supports five residents, with though these are currently untended.
renovations, just ahead of the returning students plenty of common space in the two living areas and
who will begin inhabiting it from the 19th of January conservatory. There are two double and three single This site has a wealth of opportunity in terms
2009. The buildings primary use is as a residential bedrooms, with one single cleverly making up for its of redevelopment and these factors are easily
property and has been housing students for at least small size by lofting a queen sized bed up near the identifiable. The undergrowth in the large back
twelve years; as many years as current owners Maria ceiling, opening up the floor space underneath for garden could be removed, providing ample amounts
and Allen McCaw have owned the property. other bedroom amenities of space for vegetable gardens, communal lawns,
In its current configuration, the building could easily hydroponics or even the site of new buildings. The
The large, plastered concrete building is built into support another two residents, should the two area the concrete slab occupies on the same level
the bottom of the sections slope and is of a multi double bedrooms be filled by couples. The area just as the building could remain as is, but the potential
level design. An interior staircase leads from the outside the front door is paved with a large concrete value of a building extension exceeds that of its
buildings main floor, to a lower level with basement slab that acts as communal barbeque area, the site current configuration. One other asset that can never
partly recessed into the hillside. The five bedroom of the clothesline and small herb and flower gardens, be ignored; the view. It’s beautiful.

NORTH DUNEDIN

ZONING AND REGULATIONS
09

Classification
The area of North Dunedin
mostly falls under a Residential
Zone 3 (R3) or Campus Zone
classification. The Dunedin
City Council (DCC) has set
regulations for these zones.
Although the are is a mixture
of these zones their regulations
are similar. For the purpose of
this project, we will use the
regulations as set out under
R3. These regulations for R3
Zone are shown in figure 2.

North Dunedin
Residential Zone 3
Campus Zone
figure 1

NORTH DUNEDIN

RESIDENTIAL ZONE 3 REGULATIONS
10

Protected buildings
Various buildings in the area
have significant cultural
value and are protected by
the council. There are set
restrictions of the changes
allowed to these buildings.

9.0 m
Max Fauna and Flora
x 55 dBA

Ma

There are various Urban
x 40 dBA

Landscape Conservation Areas
Ma

(ULCA). These are protected
by the DCC and are public
property. They form part of the
All

community and will be used in
-y
dM

giving all living areas far greater
in
1.0

m
value.

.0
m

3
in
50%

M
0-

yd
4

F-
er age
cov
te
x si
˚* Ma
/45
63˚

figure 2

NORTH DUNEDIN

CONNECTIONS AND RELATIONSHIPS
11

SITE STUDY: 1 Duke Street Dunedin

Physical environment Physical conditions
The property at 1 Duke St is on a steep hillside with a The property is physically connected to the surround- There are close physical connections by pedestrian
north facing aspect in the residential suburb of North ing community and city by road and pedestrian ac- and road to public resources such as educational fa-
Dunedin. In relation to surrounding properties and cess. Bordering the property is a public reserve with cilities for different groups. There is a primary school
structures the Duke street property boarders with two pedestrian access immediately beside the property. around the corner and a University close by. Food out-
residential properties, the roadside, and a council re- The physical relationship between the flat and the lets, pubs and the rest of the city are all physically con-
serve. A student flat sits on the front of the property road connects the property with the surrounding resi- nected through this system. The road provides access
facing the street, and extends to the footpath and dences while the trees on the rest of the property ex- to public transportation systems and other social re-
boundaries on either side. The flat is cut back into the tend into the neighbouring gardens. The property sits sources such as the neighbouring public gardens and
hillside with the roof at the rear of the flat meeting the on the edge of a residential block with close connec- bowling club.
hillside. The land behind the flat is covered entirely in tions to both the urban environment and the neigh-
thick growth which extends without distinguishable bouring “wilderness”.
boundaries to the neighbouring council reserve.

NORTH DUNEDIN
NORTH DUNEDIN

12

Car/Traffic

Recreational Users

School Children

Bowlers/Elders

Physical relationships Student
While largely occupied by a Student population, who Profile One: During the working week we see an in- Profile Two: During the weekend student activity is
live a different lifestyle to the rest of the public, the crease of children in the area with the primary school likely to be low (at least until around 6pm). The marked
property draws close relationships and connections nearby. There is likely an increase in traffic over the change comes from an increase of recreational users
with different groups of society at different times. weekdays, especially at specific times of the day due most likely coming from outside the immediate area.
Two separate profiles of the area represent the dif- to the regular working population. Being close to Uni- The neighbouring reserve, park, and bowling green
ferent relationships and connections between certain versity there is an increase in student pedestrians at- creates a social connection with recreational users. An
groups at different times. Identifying the different so- tending class, but there would be very little pattern to increase in families and the older generation is more
cial relationships and interactions between different this given student’s flexible timetables. likely over the weekend, while students tend to keep
groups are important in understanding how a com- to a later schedule barely showing their faces during
munity functions daylight.

NORTH DUNEDIN

14

COMMUNITY: A SYSTEM OF RELATIONSHIPS 15
SOCIAL RESPONSIBILITY 17
WEEKLY ACTIVITIES IN THE COMMUNITY 19
USE ANALYSIS 21
NEEDS AND DESIRES 23

NORTH DUNEDIN

A SYSTEM OF RELATIONSHIPS
15

Community can be viewed as a system. The pieces of the means of reaching the market all in one. It is a
the system fit together because the other pieces are marketer’s dream... especially if alcohol is the product
there. Economic factors control this system because they market.
of the dependence of members of the community on
others. It would be extremely difficult for one person
or one small group of people to produce all that they
needed to live and socialise for themselves and still
have time for such things as University study, or for
there to be a University at all.
People Needs
In North Dunedin, the students are the driving sector of
the community in terms of cash flow. They travel from
all over the country, bringing not only the money from
their home towns, but their access to student loans
and allowances from the government. This means
that the residents of North Dunedin are almost solely
focused on catering to the needs of the students. As
Figure 1.0 shows, the North Dunedin community is a
very complex web of economic services based on the
presence of 20,000 young people.
Fulfilment Companies
In return, the students staff the shops and create
the everchanging workforce that runs itself, with the
owners of the businesses seldom residing within the
geographical boundaries that constitute North Dune-
din. The students bring in the money, the market, and
Figure 2.0 - Community as a bilateral system of economic relationships

NORTH DUNEDIN

10 16

Figure 1.0 - Relational map of economic connections
within the north dunedin area

NORTH DUNEDIN

SOCIAL RESPONSIBILITY
17
10

For a sustainable housing development to be The site would be accessible to members of the The sites open spaces, tree huts, covered seating,
successful the surrounding community must be smaller and wider community, with a community bike barbeque, and gardens would be ideal for families
considered. The site will carry a social responsibility system allowing people to commute around the city and students alike to enjoy during summer and
for the community, providing entertainment, for allocated periods of time. The occupants of the spring. During the winter large living areas inside the
transport and safety in the area. The aim of this is site would be responsible for maintenance of the dwelling offer open internet access, film screenings
to create a micro-community that is able to share site, with a strong emphasis placed on respect from and craft days. All of which are advertised weekly
resources, knowledge and skills. the community. through email lists and a community blog or website.
As the sun sets the site becomes a vibrant light on

NORTH DUNEDIN

18

the town belt, that would not only provide a great Again film screenings, live music, poetry readings Informing the community of the services will be
atmosphere, but it would also act as a safe point and art exhibitions would be regular fixtures in the essential to the success of the site as much of the
along the largely unlit Duke Street. The location of dwelling and on the site. Noise control has been proposed services require volunteers, organisation
the site means that people from North East Valley, considered for the entertainment and largely this will and people to make them enjoyable. Having such
Woodhaugh, and North Dunedin will undoubtably not be an issue due to the sites minimal neighbors a diverse and open environment will encourage
utilise such a convenient venue for socialising. and large surrounding section. A sober driver roster the community to treat it with respect, creating a
could be put in place, as well bunk beds and walking desirable environment that can be sustained for years
groups. to come.

NORTH DUNEDIN

WEEKLY ACTIVITIES
19
10
This age group is mainly concerned with primary or
secondary level of education. Their habits during the week
is significantly different than on the weekends. They tend

0-17
not to have dependencies or a high level of responsibility.
Rather they tend to be dependant on other members of
the community. However their contribution level has the
opportunity to be high, although maybe low in skill.

Work Study Free Time Contribution Socialising Recreation

This age group focuses on tertiary education, skill

18-35
refinement and entry level work. They tend to socialize far
more than any other group. They also have the opportunity
to contribute to the highest level with the a high level of
free time throughout the week.


NORTH DUNEDIN

20
This age group is mainly people who are well established
within the workforce. Although they may still be studying
casually, time spent in the work place requires most of their
time. Their contribution to a particular community can be

36-55
of the highest skill.


This group comprises of primarily of those individuals who
have retired from the active workforce. Their contribution

55+
to the community can be the highest in terms of time
but they may have physical restrictions limiting their
contribution. They tend not to favour change and struggle
to find social interaction.


NORTH DUNEDIN

USE ANALYSIS
21
10

Housing Income
0-18

18-30

30-50 Dependent

Own Savings

50+
Rent Employment

North Dunedin Income
Community is probably best defined by the North Dunedin is substantially made up of rental Given the large number of students in North Dunedin
interactions between different groups. Factors that property, specifically targeting the temporary student across all age groups, benefits and borrowing from
identify communities may include; locality, interaction, market. Renting is the most appropriate arrangement the government will be the primary source of income
unification, distinction, common interests. In the given the usually short durations of stay. With this, for most. Working and retired groups are more likely
case of a North Dunedin, identifying the different landlords and property owners become an important to gain income from earnings and savings. Statistics
groups who occupy the space and the way they live part of the community, with a high influence on NZ shows North Dunedin’s average income as $5,200
is essential in developing a profile that represents the living standards and interactions. compared with the $18,500 for all of NZ.
community.

NORTH DUNEDIN

22
Duration Environmental Impact

Long Term Heavy

Mid Term Medium

Short Term Light

Duration Environmental Impact
Heavy carbon footprints based on high consumption Again this shows a trend towards the short term among
amongst younger groups. Substandard housing may students. This means there is little investment in future
contribute to energy wastage. But some of this may be benefits for the community. If an older member of the
offset by low use of carbon heavy transport. Groups working population stays in the community there is
who travel in and out of the community more often greater chance of longer stays.
may contribute more through transportation.
0-14 15-64 65+
2% 95% 3%
Age profile of North Dunedin according to StatsNZ

NORTH DUNEDIN

NEEDS AND DESIRES
23
10

North Dunedin
The University of Otago is a well known institute, live in North Dunedin. The famous student culture is community, representation and loyalty within North
that provides quality education, high standards, and concentrated on the northern side. Student flats and Dunedin.
pride to this area. The presence of this institution those of staff members are scattered and mingled in Residents in the northern side of Dunedin have all
contributes to one of the thriving cultures here in between homes of the locals. their needs catered for. A local supermarket, small
Dunedin, as the student city. The University of Otago Strong local culture is also established through shops or dairies, a mini shopping centre, petrol
also provide the benefits of supplying quality occupa- schools, primary through to high school. Also it is stations, fast food outlets, all help supply food and
tions or employment. through sporting clubs ranging from bowling, cricket, other essentials. Medical needs are also met with
Students make up a majority of the residents who football, and rugby that help build a strong sense of local general practioners, vets, student health centre,

NORTH DUNEDIN

24

and the hospital nearby. Spirtitual needs are also met space they are entitled to. These public spaces con- ously done that, so then the question is what is
with the numerous concregations lining along North tribute to the wellbeing of residents young and old. missing, or what more can be done? Achieving a
Dunedin. North Dunedin are catered for its residents by places sustainable community requires residents that care
People need public space to relax and interact with where they can benefit from open space. Without about the area. Building that trust and care for the
not only one another but with the environment they people there is no community, so attending to their area, through accomodating to peoples needs, will
live in. Football grounds, rugby fields, the Botanic needs is as important. The environment people live establish loyalty to the area. As a result passionate
Gardens, and local parks give residents a great place in and what is around influences the choices, and ideas and suggestions will be generated to improve
where they can acknowledge nature and enjoy the the desire to stay there. North Dunedin has obvi- or maintain a sustainable community.

NORTH DUNEDIN

26

HEALTH:
IN A COMMUNITY CONTEXT 27
SITE INFLUENCES 29
POPULATION DENSITY 31
HABITS AND LIFESTYLE 33
BUILDING 35

NORTH DUNEDIN

IN A COMMUNITY CONTEXT
27

NORTH DUNEDIN

28

Manpower Easy Epidemics
Social Interaction
When physical labour is required for the good of the In community and close-living situations it is very easy
Important for mental health and well being, provides
community, “many hands make light work”. This is for contagious illnesses to spread. This can become an
an outlet for frustrations, opinions and tensions. Also
good in terms of achievement, physical health, social epidemic if left unchecked. An example in Dunedin is
provides support and gives people something to do as
factors and mental health. the “Fresher Flu”.
well as share knowledge and experiences.

Entertainment Neighbourhood Watch Weakest Link
Also good for mental health and the general well There is no doubt that there is safety in numbers. In terms of hygiene and food safety, it only takes one
being of the community because when people are Community members look out for others and vice person’s lack of knowledge in this area to make a
bored, problems arise. As with everything, the com- versa. This builds trust, social well being and general whole lot of people sick. They are the weakest link in
munity provides and consumes this. safety within the community. the community chain.

Communal Knowledge Buffer System
Potential for Disagreements
In terms of problem solving, illness diagnosis, preven- When a member of the community is sick or unable
There are always going to be disagreements in a close-
tion and healing, communal knowledge is a great to complete their duties, there are plenty of people to
living situation. This is exacerbated by close quarters,
asset to have. Many brains are definitely better than take their place and look after them and their chores
and can get nasty. Luckily there is the factor of Neigh-
one, and shared experience benefits all. while they are unwell or away.
bourhood Watch to combat this.

NORTH DUNEDIN

SITE INFLUENCES
29

Desire equals good health Work equals good health
The sustainability of the site depends on the sites Having a site with existing trees, grass and walkways The occupants and temporary users will also be
desirability, and more specifically the health and well- provides feelings of privacy, adventure, serenity required to maintain the section, using physical
being of its permanent occupants and temporary and personal space. All of which are important to energy that can release endorphins. It would be
users. The rationale behind this is, if a person is in address for the users state of mental well-being. The promoted that people should not expend too much
a comfortable environment which they desire to be site not only gives the occupants a relaxing feeling energy working and not relaxing. It’s even been
in, then they will have a healthy body as well as a through nature, but it also encourages physical found that simply looking at trees and vegetation
healthy mind. fitness through its large sloping selection of paths reduces stress, lowers blood pressure, and relieves
and gardens. muscle tension (Campbells, 2004) .

NORTH DUNEDIN

30

Environment

Inputs Outputs
Outputs Inputs

View and warmth Interconnected
The site also has some stunning views over North Windows would be triple glazed so as to maintain communities involvement and interest in the site. If
Dunedin, taking in the local architecture and the lush the heat and sound that the dwelling generates. there was no connection between the community
town belt. The existing dwelling already has a large As well as the windows and balcony, the large then there would be little connection between the
balcony on the street side of the property as well as section would have seated viewing areas placed up natural environment and the human environment.
a sun room (pictured) with large windows. The rest the section allowing people to take in even more Members of the community are required for waste
of the dwelling has minimal windows which would of the views of the surrounding community. The disposal, resource conservation and consumption,
be rectified as much as possible in the alterations of connections between the community and the site pollution control as well as entertainment, education
the dwelling. and vital as the system would not work without the and communication.

NORTH DUNEDIN

POPULATION DENSITY
31

The Community Culture Density of dwellings
In North Dunedin as we see it today the is a high of the street grid and the dependency on vehicles Buildings that are built too close to each other block
level of interaction between individuals of a certain for short transport. Statistics for 2006 showed that the sun from warming them up. This causes building
age and who are mostly students. This is a result of 15.9% of homes in New Zealand had access to three to be colder, damper and more likely to make its
a high desire for social interaction. However the built of more cars. Cars are parked most of the time and occupants ill. It also makes it harder for plants to grow
environment in Dunedin does poorly to facilitate even then cost money to run. Up to one third of all in the area and a diverse range of wild animals find
community interaction, which is important for the car trips made in New Zealand are under 2 km. We the area uninhabitable. It causes a higher density of
happiness of individuals. The environment is disturbed are likely to feel less connected with the community waste which proves to be suitable for opportunist
by the amount of individuals who use the area for when we drive everywhere. Another study shows animals such as rats, mince and seagulls which breed
parking while at work, density of the dwellings, setup that a lack of general human interaction is a facture dangerous diseases. Let alone the implications of
contributing to an every rising depression level world higher density of waste.

wide.

NORTH DUNEDIN

32

The Street Grid Pedestrian Travel
Housing and the lifestyle around interaction with poor community interaction levels. It also has created Another concern is the exercise level of the
peoples homes is to an extent restricted and a build environment and has removed the joy of individuals within the community, judging by rising
controlled by the street grid on which we live. The nature from peoples daily live. All in the effort to obesity levels globally. This is partly cause by an
way we travel, how we interact with our neighbours, make a quick buck. The removal of the fixed idea of increase in travel by vehicles and a decrease in travel
where we interact with them and even who we a street grid brings many advantages. Higher levels by walking and cycling. Also partly cause by an
interact with is determined by a street grid made of community interaction, a re-connection with increase in crime affecting pedestrians and cyclists.
primarily with access and economic efficiency in nature and allows for houses to be placed optimally However this once again can be blamed on a poor
mind. However these ideas were based on being within the space. This results in an environment street grid system. A solution in well light streets and
able to drive your car up to your front door and not which helps elevate stress and sustain mental well walkways and less vehicle access to certain areas.
on human interaction. These grids and the density of being. This will result in a higher level of pedestrians and
the houses built within them have made for pretty cyclists. More people means less crime and higher
interaction.

NORTH DUNEDIN

HABITATS AND LIFESTYLE
33
10

The Effect of Lifestyle on Individual Health and Wellbeing: Sleeping Habits
There are specific habits and characteristics of the will focus on the individual affects. There are particular The value of sleep to personal health is often taken for
lifestyle of individuals in North Dunedin which have social and cultural determinants of health and granted. Sleeping habits greatly affect the effectiveness
a significant impact on health and wellbeing among happiness. These are created largely by a particular of sleep. Exercise, caffeine, stress and other factors can
individuals. Taking into account the significant number “lifestyle” which results of a number of contributing influence the quality and quantity of sleep a person
of students between the age of 18 and 30 who inhabit factors. Outcomes: gets. The “student lifestyle” in North Dunedin is likely
North Dunedin, there are particular issues relating Creating spaces that encourage and contribute to to have a negative impact on sleeping habits. Students
to individual health and wellbeing which should be better health and wellbeing of the individual, which have a propensity to keep irregular hours, combining
considered when designing a sustainable community. in turn have a positive impact on the community as social with academic schedules, often with the
These issues are often community or site related but I a whole. assistance of caffeine to delay sleep.

NORTH DUNEDIN
NORTH DUNEDIN

34
Dissecting lifestyle factors and habits affecting health in North Dunedin

Social Habits Fitness and Diet
Behavioural and social issues that impact on Regular physical activity and a balanced
health include substance smoking, alcohol, nutritional intake are important contributors
drugs, exercise, and sexual behaviour. With to healthy lifestyles. Exercise is an area with a
evidence of a high degree of substance abuse positive impact on health and wellbeing of North
and sexual activity among individuals in North Dunedin with increased activity from walking,
Dunedin these factors are important to both biking or social sports teams. Poor diet can often
the physical and mental health and wellbeing be linked with low income. A high concentration
of the individual. In addition to alcohol related of cheap, unhealthy food in North Dunedin is
accidents, binge drinking impacts on crime and a growing contributor to poor nutrition, not to
social problems. Similarly, drug taking can have a mention the pie or two from the 24 on the way
devastating affect on personal health as well as home from town every weekend.
impacting on others.

NORTH DUNEDIN

BUILDINGS
35
10

Resource and shelter North Dunedin Housing (Shannon S) Consturcting a house is not hard, the
A Building according to EVH3 - Impact of Housing on Houses in North Dunedin are known for their Victorian hard part is designing a house that will handle local
Health in Dunedin NZ (a case study based on Dunedin villa look, not only that they are commonly being weather conditions, and shield all that is inside.
housing) it identifies the home to be a place where occupied by a great number of university students. In
residents can find safety and comfort, and protection recent times North Dunedin houses all share a common
from the outside weather. (Shannon S) factor which is affecting its residents and their well
being. That common factor is moisture. The reason
why moisture is quickly affecting houses in Dunedin
is due to the reliability of “building fabric, water and
air supply, and the energy use within the building”.

NORTH DUNEDIN

36

Tips to prevent condensation and mildew

Keep your house warm, Wipe any moisture off glass
generally 5-7 degrees celsius or other cold surfaces.
warmer than outside.

Avoid using unflued gas heaters Keep doors to other rooms closed when
they give off moisture as they using the bathroom or kitchen to prevent
provide heat. steam spreading throughout your home.

Insulate the ceilings and
walls.

Building for local conditions and poorly maintained, so there is a need to install noticed and accepted the poor conditions. Because of
A building needs to be constructed to protect its the right equipment that will generate heat, provide their carefree attitude students would not seek help
tenants from the harmful affects of the weather. ventilation, and minimise health risks. or improvement, and live with these poor conditions
Dunedin weather to date has been high in humidity leading to various health issues. It is in the landlord’s
increasing the levels of moisture in the homes, and Failure to construct a healthy home duty to present a home that is free from dampness,
also contributing to the growth of house dust mites. A home that fails to provide tenants with a suitable with sufficient ventilation, moisture resistant, and safe
The increases in these two areas have tenants at risk and safe living environment, like a damp home from all danger.
with exposure to Dermatophagoides pteronyssinus increases the chance of them getting sick. According
(dust mite allergen) which can lead to asthma. A to the EVH3 report it recognized that students, living
majority of these student flats are under ventilated in the numerous flats surrounding the University,

NORTH DUNEDIN

38

MATERIALS: LOCAL 39
NATURAL ON SITE 43
FUTURE CONSTRUCTION 45
RE-THOUGHT 47

NORTH DUNEDIN

LOCAL
39

Existing Materials
The dwelling currently onsite is constructed mainly Further insulation and/or repair of the external walls
from reinforced concrete, as shown in the photo mon- with sustainable materials, double glazing, a strength-
tage to the left. The interior walls of the house are ened, insulated and load bearing roof, further and
brick, and the ceilings are plastered. Timber is used complete use of the available land space and poten-
for access points like the stairs and doors as well as tial indoor area, and more window area along the
flooring on the upper floor and the ceiling support. frontage of the house for maximised sun usage would
The flat roof is clad in corrugated iron.Very little of improve the sustainability and general quality of this
the materials used in this building can be regarded dwelling.
as entirely sustainable. Neither are they likely to be
entirely local.

Although concrete in general is good in terms of in-
sulation and strength, the concrete in this dwelling is
old, not very dense, and is cracking in some parts, let-
ting in water and causing a cold, humid environment
in the lower floor. The corrugated iron on the roof is
also quite old and some of the nails have fallen out.
The flat roof has major potential for food production
or social space, but this would not be possible with
the constraint of this non-load bearing surface and
material.

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40

Potential Local Materials
Insulation Construction/Reinforcement

Wool - Central Otago produces a large percentage Timber - Otago, as with the rest of New Zealand, has
of New Zealand’s wool. Wool is a healthy, sustainable commercial timber planted around the entire span of
insulator that literally grows on the backs of animals. the region. Forestry blocks are harvested, milled and
treated locally.
Flax - Flax fibres can be turned into a safe, energy ef-
ficient insulator with fire retardant, acoustic and heat Concrete - The quarry beside Logan Park in Dunedin
insulating properties. It grows in wetlands all over produces cement and gravel for export and local use.
New Zealand. Concrete is the original material of the house, and
adding to it in the same way will keep the feel of the
Natural Insulation™ - A commercially produced, house consistent.
New Zealand based insulation product that is created
from recycled newsprint that is macerated and im- Oamaru Stone - A light coloured sandstone that is
pregnated with natural minerals. It is sprayed on, so used in a lot of historic buildings in the Otago region
fills every gap and is 100% natural or recycled. as a facing. Not durable enough to be used as a foun-
dation or structurally.
Clay-coated Straw - Has an R rating of 3+ per inch
of thickness and has been proven as a sustainable and Rammed Earth - The oldest and most readily available
efficient insulator for over 700 years. Very easy to pro- material known to man. Rammed earth can be used
duce and build with. as a very strong and permanent construction material
and has good thermal mass but poor insulation.
Why do people use imported, non-natural substances
or even none at all when there are so many natural,
efficient insulators available within arms reach?

NORTH DUNEDIN

LOCAL
41

When selecting a material it is important to consider (NZS provides customers with a LCA on all products),
where the material is made, and where it’s raw mate- plastics (when treated, recycled plastic can be used
rials come from. Whether it made close to the site or to insulate) and the various forms of stone quarried
transported from elsewhere in New Zealand, or is it throughout New Zealand.
imported. And if the raw materials local or imported.
The more transport involved in getting the material
to the building site, the more greenhouse gas emis- Auckland Region
(scoria)
sions it is contributing to.

The transport factor is also linked with cost, the
further away the material, the greater the transport
cost. Consider the weight and bulk of the mate-
Nelson
(marble)
rial. Transport costs will be higher for heavy or bulky
materials. The more transport involved in getting the
material to the building site, the more greenhouse
Waikato
(limestone)
gas emissions it is contributing to.
Central Otago
There are a variety of local materials available for (schist)
use in the construction of a sustainable community.
These include locally produced glass, concrete and
is superior form Hebel, timber (although native
New Zealand species of timber have proven to be Oamaru
(limestone)
poor building materials, the Pine Radiata which was
believed to be introduced by settlers is a very versatile
source of timber and grows easily throughout New
Zealand), Aluminium and steel for use in frame work
Areas throughout New Zealand where stone is quarried

NORTH DUNEDIN

42
Stone is one the under utilized local materials The embodied Up-front materials costs are relatively high, but
readily available in New Zealand. Many of the energy of those costs are partly offset by low maintenance
environmental issues with stone has to do with locally sourced and long life. Stone is heavy to transport. Costs
the “non-locality” of the material. However stone, dimensioned or cut increase with distance from quarry or port of
stone vs imported
in its many different forms are readily found entry. Natural (uncut) stone is labour intensive to
dimensioned stone.
throughout New Zealand. Imported install – cut stone is easier to lay.
6.8 MJ/kg Stone is usually installed as a veneer supported
Stone is a natural product that can be quarried or off a framed structure or as a thin slab finnish to
sourced from gravel areas such as river beds. In Local wall and floors. Specialist skills are required. Once
domestic buildings stone is typically used as cut 0.79 MJ/kg
delivered, materials can be handled by site labour.
stone or coursed natural stone veneer attached Structural capability Stone is typically used as
to a timber frame, or as a cut tile applied to wall veneer – structural stone must be specifically
and floor surfaces. A wide range of stone types engineered. Durability depends on stone type and
are available – the most common being schist, environment but stone is usually very durable.
limestone, scoria, sandstone, bluestone, granite Limestones, marble and sandstones can be
and marble. affected by aggressive (industrial) environments.

The quarrying of stone creates dust, noise and Oamaru Stone wall in the ISB Building of the Oamaru Stone is readily available from an
a significant visual impact to the land being University of Otago area just north of Dunedin. Oamaru Stone is a
excavated. There is also potential for damage Gabion Walls can be hard, compact limestone. It is ideal for building
to local ecosystems during extraction. Although made from irregular sized purposes, especially where ornate moulding is
there are typically no emissions from the stone stones, rocks or from required. The finished stonework has a creamy,
rubble from demolished
– granite may emit low level radioactivity. Stone buildings. When used sandy colour. Unfortunately, it is not strongly
is inert, non-toxic and not generally prone to off- properly can have great resistant to pollution, and can be prone to surface
gassing of volatile materials. Coatings applied to aesthetic appeal as well crumbling. If left unprotected, Oamaru Stone can
as being structurally
porous stones to seal the surface may have VOC strong, sturdy and having wither, in time.
emissions, although now days typically low. thermal mass properties.

NORTH DUNEDIN

NATURAL MATERIALS ON SITE
43

Building Materials
Due to the large amount of trees available on the We can use local sawmills, furniture manufacturers The logs provide insulation that keeps heat in the
site both now and after future growth, cordwood and log home builders to see if they have any scrap building, while the mortar provides the ability to store
building would be the best option for sustainable wood, and we can use any dead trees on the site. and release heat into the building.
building. Current supplies of wood can be used for The mortars that are commonly used include mixes The wood might expand over time and crack the
initial building, with future tree growth used for of cement, lime, clay, sand or sawdust. Cordwood mortar, but you can remedy this problem through
maintenance. Cordwood building uses wood that is is a natural building material that offers both good caulking (2009 HowStuffWorks, Inc.).
cut into short lengths, about the size of firewood, insulation and good thermal mass.
which might otherwise go to waste.

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44

Planting Materials
Planting new trees on site will not only be a valuable shelter, resources and attracting wildlife. It is also vital Utilizing the existing site materials is a high priority as
construction resource, it will also break down that there are trees and plants grown for their ‘fruits’ any reduction in outsourcing materials heavily reduces
carbon into oxygen. This is a simple yet effective such as apple trees, tomato plants and any number our carbon footprint. The existing roof will be used to
way to reduce our carbon footprint. The use of of vegetables that can be grown year round in capture rainwater to reuse in the garden. We will also
native plants and trees is also fundamental as they Dunedin. This is something that would be promoted install a ‘drip line’ irrigation system and use an 100mm
need little maintenance as they easily adapt to their to the city council as a more sustainable tree planting layer of mulch as ground cover instead of a weed matt
environment. Trees such as Kowhai, Cabbage and scheme than its current aesthetically driven planting’s. to reduce the use of plastic.
Pohutakawa would be ideal as a basis for providing

NORTH DUNEDIN

FUTURE CONSTRUCTION
45

The sustainability of buildings is dependant on Building new structures provides us with an opportunity Hebel
its ability to adapt for change of use or ability to to plan environmentally freindly outcomes. One way Hebel is a lightweight autoclaved concrete building
be deconstructed optimising re use and recycling of acheiving this is through the use of new energy material. It essentially provides the same functions
of materials. Creating sustainable communities is efficient and sustainable materials. and values of traditional concrete
about creating permanent systems that encourage
sustainable behaviours. From the point of view of the property and existing Features of Hebel include increased thermal efficiency
building at 1 Duke Street, it is one that demands and moisture management and is non-toxic. It is
The choice of materials has a huge impact on the strength and stability while staying open to the north strong, durable, accurate and versatile. These benefits
sustainability of buildings. The challenges faced facing aspect. The sun is an obvious advantage of of Hebel translate into valuable properties for the
are that most existing buildings built from energy the property, so I will look at two technologies which building an user. In terms of use, Hebel maintains the
inefficient materials and with little thought as to efficiently utilise the natural energy it provides, with physcial and cultural traditions and values of concrete
environmental impact and long term sustainability. minimal environmental implications.
NORTH DUNEDIN
NORTH DUNEDIN

46

while providing increased sustainability for the user Electrochromatic Glass/ Smart glass while involving the user in a process of adjusting their
and less environmental impact through lower material Glass is a matrial with inherent valuable function if own environment. Smart glass maintains the intangible
and energy use during manufacture. Sustainability utilised in appropriate ways. Electrochromatic glass is values of glass such as views and connecting interior
extends to the futureproofing of materials. Not only is a technology which allows the amount of light the with exterior.
Hebel recyclable but a Hebel home is more affordable glass alllows through to be adjusted. this gives the
to run giving it greater value. user a feeling of control over light and heat in their
www.hebel.co.nz environment. The tint of the glass can be changed
when small electrical current. Obviously the electricity
required could be offset in through other sustainable
technologies such as photovoltaic cells (solar panels).
Smart glass increases efficiency in lighting and heating

NORTH DUNEDIN

BUILDING MATERIALS: RE-THOUGHT
47

Dunedin Standard Break down of building fabric types, surveyed student houses (EVH3 2003)
The future usage of materials in Dunedin buildings Walls Windows
needs serious attention to assess health concerns, Timber frame, weatherboard exterior 49% Single glazed, wooden frame 77%
sustainability and affordability, particularly in residential Timber frame, brick exterior 22% Single glazed, aluminium frame 15%
housing. A recent research project undertaken by Timber frame, plaster exterior 11% Single glazed, plastic frame 1%
University of Otago Energy Studies students, EVH3 – Concrete block or tilt slab 7% No data 7%
Impact of Housing on Health in Dunedin NZ, details Mixed types 2%
the age of and common building materials used in
No data 9% Insulation
existing Dunedin houses. Focusing on the student
No insulation 68%
housing sector, a study of 91 student houses showed
Floor Roof insulation 7%
that an overwhelming number were built prior to
Suspended 59% Roof and wall insulation 5%
1910 and constructed of non insulated weatherboard
Concrete slab 32% No data 20%
on timber frame. In a temperate climate like Dunedin,
Mixed types 1%
with high summer temperatures and very low winter
temperatures, this type of pre-1910 Victorian style No data 8% Roof

villa lacking, in some cases, any insulation at all is Corrugated iron 58%
unacceptable. Tiled 10%
No data 32%

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48

Building the Future Construction Pure Practicality
A highly versatile building material being used Generally speaking a prefabricated concrete panel used The benefits of a “prefab panel” building over the aging
throughout the world today is the prefabricated for a residential buildings wall, consists of ~125mm Victorian style house are numerous. The installtion
concrete panel. It is used mostly in floors, walls and thick concrete either side of a polysterene core ~50mm process is not difficult but does require the use of
in some cases, like office buildings, interior ceilings. thick. The wall panels range in size depending on the a crane to position the panels. Keys on the bottom
More and more it is being used to construct modern manufacturer but are often made to fit the height of edge fit into holes in solid concrete foundations and
energy efficient passive houses, due to its insulating a one story and 2-3m in length. then steel plates in the corners are welded and and
properties and relative ease of installation. insulated to prevent thermal bridging. Thin concrete
panels can be used as the ceiling/roof, but often a
traditional insulated timber framed roof is used.

The concrete acts as a thermal mass, moderating
indoor temperatures by storing and/or releasing
energy, usually received from solar radiation. This
keeps the interior cool when it is warm outside and
warms the interior with stored solar engery when it
is a cool night outside. By reducing active heating
and cooling, the passive home saves the occupant on
energy bills and eliminates pollution associated with
energy generation.

This type of construction would compliment the
existing form of the Duke Street residence and greatly
improve the value and efficiency of operation.

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50

SYSTEMS:
CONTROLLING YOUR ENVIRONMENT 51
OWNERSHIP 53
FOOD SYSTEMS 55
ENERGY 57
WASTE 59
PASSIVITY 61

NORTH DUNEDIN

CONTROLLING YOUR ENVIRONMENT
51

In the Context of the Site
Productive-mode systems - These systems produce The proposed site has potential for a lot of glazing and building on the thermal mass already
energy from the immediate surroundings - e.g. Wind improvement in many areas, including insulation, heat present, as well as active measures like ventilation
turbines, hydroelectric generators. management, natural lighting solutions, moisture and moisture control systems and a small amount of
control, and airflow - all of the factors that define a heating. There is also potential for photovoltaic solar
Composite-mode systems - This is a combination living environment. In terms of this, and in the context energy generation due to the positioning of the house
of all of the other systems involving strategies for of Dunedin’s climate, a Composite-mode system is the for productive-mode systemization. Composite-mode
all eventualities. Seasonal differences are taken into most appropriate. This would mean improvements systems take the best of everything to form a superior
account and catered for. through passive means such as super-insulation, triple environmental control system.

NORTH DUNEDIN

1 52

MIXED PASSIVE

COMPOSITE

FULL/ACTIVE PRODUCTIVE

Environmental Control Systems
The living environment in any dwelling is as important There are 5 main systems or “modes” for controlling Mixed-mode systems - these systems accentuate
as the dwelling itself. If a building designed to be lived a living environment, as described in “Ecodesign: A the positive aspects and energy sources of the site and
in isn’t habitable then it is useless. The factors that Manual for Ecodesign” by Ken Yeang. These are as the passive-mode measures in place.
dictate this living environment are: heating, cooling, follows:
lighting, shading, moisture and airflow. There are many Full-mode systems - These systems are fully active,
ways of controlling these factors, and many systems Passive-mode systems - these are systems involving in that all energy is produced electromechanically. To
that integrate these controls to create a comfortable, non-active measures such as sun orientation and be environmentally friendly these systems should have
healthy, safe living environment for the occupants. super-insulation. No non-renewable energy is used. low energy consumption and low impact.

NORTH DUNEDIN

OWNERSHIP
53

From left to right: The Dunedin City Council, collaboration of arms, Dunedin students who largely make up the North Dunedin Community.

Council Initiative
Promoting the Duke Street site as a sustainable The DCC would be required to purchase the property, allowing the accumulated rent to accrue into shares
community link will give the Dunedin City Council fund the alterations required to the building and help of ownership. This would give the tenants a sense of
(DCC) an excellent opportunity to internationally with the acquiring of facilities such as an internet station, belonging and purpose to successfully maintain the
promote the city as ‘forward thinking’, as well as film projector and a free barbeque like those found site as a valuable community resource. Where possible
encouraging the rest of the Dunedin populous to set in the Woodhaugh Gardens. This capital investment community fund-raisers, events and donations would
up similar links around the city. These forms of council would be paid off by the residents of the property. help with maintenance and expenses.
initiatives would help to reform public faith after the The council would provide an incentive to stay and
controversial stadium developments of 2008/09. maintain the property for sustained periods of time by

NORTH DUNEDIN
NORTH DUNEDIN

54

Tourism
Fig 1. Diagram of Ownership connections.

Kn
ow

$)
International

l(
le

ta
dg

pi
e
Ex

Ca
pe
rie
nc
e
Management

Rent
City guides

ce
an
en
nt
ai
m
&
ts
en
Ev

Events and gatherings
Community Residents

Management Community Access
The management of the site would largely be a Access to the site would be available 24/7 with an This will however require the residents to make
collaboration between the council and the residents ‘open door’ policy to the outdoor areas as well as the some decisions regarding disrespectful members of
of the property. The council would be called upon to communal kitchen and lounge areas. The residents the community. This is something which must be
setup a community web-site with details of events, of the property would be well insulated from any considered when taking into account the student
facilities and working bees. The actual events would noises with their sound proofed bedrooms and locked drinking culture. While it is ‘open door’ the residents
be managed by the residents and the community. bedroom doors. It is necessary to have a 24/7 policy for will have the final say if troublesome members of the
safety purposes for people walking at night through community are welcome at the Duke’s Link.
the Woodhaugh area.

NORTH DUNEDIN

FOODS
55

One of the largest contributors to a personal maintained green house. It requires a little
carbon foot print can be consuming imported time and effort by the owner, however if
food. It occurs especially in New Zealand properly managed equates to less than the
and although the country produces a large cost of purchasing these products from
quantity of high quality foods, it is mostly the supermarket. Treated waste from the
exported. The food products available to the plumping and left over food scraps can be
public tend to be imported and often of lower turned into compost, further reducing the
quality than those which are locally produced. individuals general waste production.

Local products are available in Dunedin A variety of foods can be grown inside your
at events such as the Farmers Market on house from wheat grass and spices in a
Saturday mornings. However even these window sill to an avocado or tomato tree in
products have relatively high food miles due a bucket in a semi lit area. Almost all types
to individuals traveling large distances to the are food can grow outside, however weather
markets from their homes throughout the city. and seasons will reduce their efficiency. A
greenhouse can sustain practically any type
If the market was spread out across Dunedin, of food all year round. A combination of
located in every suburb, people would be these three, along with a rainwater collection
By spreading the market into several smaller markets in the
more willing to visit them, farmers would sell system to reduce the cost of water, can
suburbs of Dunedin, products reach more people and reduce the
more stock and the community in general supply the owner with sufficient sources of food miles of the product.
would travel a smaller distance to them, even fruit and vegetables all year round. If properly
walk. managed the owner my not require to
purchase any fruit or vegetables at all.
Fruits, vegetables, nuts, sprouts and even
eggs can easily be grown in any persons
own home, garden or all year round in a

NORTH DUNEDIN

56

NORTH DUNEDIN

an
hc
hic ide
s w n ins
od
fo ow
gr
be
se
ou ll
nh na
ee w
gr ro
n a be g
di
un an
ro hc
ar hic
ye sw
od
fo
l
al
n
ow use
gr
be ho
n n
ca ee
ch gr
hi a
in
s w nd
od rou
fo
ar
ye
e
sid
ut
no an
ow ich c
gr h
be sw
od
fo

ENERGY
57

Creating sustainable communities is about establishing Sources:
frameworks that work around existing and future Most sources of energy are natural, However it is the
technologies to maximize opportunities and use of inefficient and harmful use of non-renewable sources
sustainable systems. Energy is an essential resource for which creates the biggest problems to our environment.
sustaining utilities for health and wellbeing, comfort Increasing demand and poor management of the earths
and enjoyment, and production of resources. energy sources remain the biggest obstacle to reducing
that harm. The challenge is capturing and utilising
those sources which are constant and renewable in the
most efficient ways.

NORTH DUNEDIN

58

Technology: Opportunity: Implementation:
Existing solar, wind and water technologies provide The main use of energy is electricity supply for light, The main hurdles to developing and implementing
great opportunity to increase the sustainability of heat and other utilities. At present electricity is sold sustainable systems are the costs involved, changing
energy supply. The Duke Street site has the advantage as a consumable commodity by those with the means existing attitudes and practices. Regulations and laws
of a north facing aspect with the obvious benefit of of supply. There is opportunity for creating localised also place restrictions on progress in this area. Necessary
sunlight. and community systems for allowing the individual to to the implementation of a sustainable energy system
own the means to provide for their own energy needs. is energy efficient technology combined with green
This places the responsibility for production and use in building practices and smart design, and possibly the,
the hands of the user. Creating a system which will most important is more sustainable human practices
maximise the suns natural sources of light and heat will and usage around energy usage.
inevitably involve the processes of design, production,.

NORTH DUNEDIN

WASTE SYSTEMS
59

Left: A natural wetland

Right: A slurry tank,
the solution against
methane

Natural Wetlands Compost Methane

Natural wetlands are made up of an area of land that The organic materials received from living animals and Methane originates from livestock and poultry manure.
is filled with water. Its purpose is to purify and slow plants come to produce compost. Before the compost Due to large fields of livestock, in New Zealand, it
the flow of water off the land, controlling flood water the organic materials go through a “breakdown” makes up a large portion of methane waste which
and pollutants. (Wetland Solutions) The benefits of process. Composting is one of the oldest methods of produces a lot of
having a natural wetland: It improves the quality of disposing waste and fertilizing soil. The good aspects organic carbon. Methane is not necessarily the
water as it acts as a filter, reduces flooding as it acts about using compost is that it fertilizes and gives soil healthiest of waste systems for it releases great
as a sponge, it provides a natural yet a pleasing sense structure, keeps in moisture, and it minimizes weed amounts of carbon. The solution to decreasing the
of surrounding, and it provides an on-going water growth. harmful affects of methane is to install a Slurry tank;
supply. they have already proven to be a success.

NORTH DUNEDIN

60

Left: Grey water
system

Right: View of North
Dunedin

Grey water North Dunedin

The laundry, washing machines, washing basins, These waste systems are all existent and performed waste system. Methane is slowly impacting on the
shower and bath all produce grey water. It is the all over the world. In the area of North Dunedin it has environment; it is safe to say North
household waste water that has not crossed paths the potential to Dunedin is in no danger of increasing organic carbon.
with toilet water. Its purpose is to be re-used in times establish a natural wetland with the presence of the The grey water system is a solution
of need. Also it can be gathered and used on plants Leith River. The Leith River in past years has already everyone should invest in, it is easy to set up and to
and lawn areas. The benefits of using grey water is had its share of floods, which it helped to reduce. And manage. And with grey water,
that it has less nitrogen than in black water/ or toilet its existence promises the potential to create and have composting, and natural wetlands the whole
water (nitrogen, the pollutant that is hard to get rid a continuous water supply. community can interact within these systems and take
of and affecting the potential water supply). And also part in making a healthy choice
grey water decomposes faster which stabilizes quicker North Dunedin has great green scenery, and with together, and know that they will benefit from it.
meaning an enhanced prevention of water pollution. the large population of trees in the area composting
would be a great alternative for a

NORTH DUNEDIN

PASSIVITY: LESS IS MORE
61

Essential Safeguarding
In these days of economic and ecological uncertainty go hand in hand with these new practices, to reduce These systems work in conjunction with each other
architects, property developers and builders are looking the dependancy on energy and ammenties provided aswell as with fixed ammenities such as power,
for cheap sustainable building practices to ensure by power companies and local councils through bill gas and water provided privately or through local
continued growth in the market. New building materials payments and rates. Technologies such as grey water councils, to create a residence that can operate mostly
play a large part in this new direction of construction; recycling systems, solar energy collection and wind independantly of the national grid and so incorporating
using recycled materials and prefabricated panels turbine energy generation are systems that once in these systems into the 1 Duke Street site will greatly
for ease of construction is becoming more widely place, require very little active input and thus are increase it’s projected long term value.
common place. Technologies are being developed to termed “passive systems”.

NORTH DUNEDIN

62

A personal home SkyStream 1.8kw wind turbine can Rainwater collection can be stored and used to irrigate Grey water, such as water from the washing
reduce your annual power bill by up to $1000. gardens, flush toilets and once treated can be used for machine, sinks and kitchen sink can be
bathing, cooking and drinking. recycled and used as irrigation water or for
flushing toilets.

Wind Turbine Power Generation

Rainwater Collection Solar Energy Collection

Hydroponics/
Greenhouse

Thermal Mass Walls

Grey Water Recycling

NORTH DUNEDIN

64

OUTCOME:
GREY WATER AND RAIN COLLECTION SYSTEMS 65
FUNCTIONAL SUN SHADES 66
LARGE NORTH/EAST FACING WINDOWS AND THERMAL MASS 67
GREENHOUSE 68
SUSTAINABLE ENERGY SOURCES 69
SUSTAINABLE HOUSE 70

NORTH DUNEDIN

GREY WATER AND RAIN COLLECTION SYSTEMS
65

NORTH DUNEDIN
NORTH DUNEDIN

FUNCTIONAL SUN SHADES
66

NORTH DUNEDIN

LARGE NORTH/EAST FACING WINDOWS AND THERMAL MASS
67

NORTH DUNEDIN

GREENHOUSE
68

NORTH DUNEDIN

SUSTAINABLE ENERGY SOURCES
69

NORTH DUNEDIN

SUSTAINABLE HOUSE
70

NORTH DUNEDIN

SUSTAINABLE HOUSE
71

NORTH DUNEDIN

SUSTAINABLE HOUSE
72

NORTH DUNEDIN

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